<!DOCTYPE html>
<html lang="en" style="font-size: 100px;">
<head>
    <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
    <meta name="viewport"
        content="width=device-width, initial-scale=1.0, maximum-scale=1.0, minimum-scale=1.0, user-scalable=no, viewport-fit=cover">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <style type="text/css">
    *{
        margin: 0;
        padding: 0;
        background-color: black;
    }
    div{
        width: 100%;
    }
    img{
        width: 100%;
    }
    </style>
</head>
<body>
    <div>
        <img src="wechat.jpg" />
    </div>
</body>
</html>